Effect of honeycomb-patterned structure on electrical and magnetic behaviors of poly(ɛ-caprolactone)/capped magnetic nanoparticle composite films

Novel biocompatible poly(ɛ-caprolactone) (PCL) was synthesized via in situ ring-opening polymerization of ɛ-caprolactone under different concentrations (10, 20, and 30 wt%) of capped magnetic nanoparticles (CMPs). The prepared PCL/CMP composites were characterized using Fourier transform infrared, U...

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Bibliographic Details
Published in:Polymer (Guilford) 2016-03, Vol.87, p.138-147
Main Authors: Kim, Jin Kyung, Basavaraja, Chitragara, Umashankar, M., Huh, Do Sung
Format: Article
Language:English
Subjects:
Biocompatible polymer composite
Capped magnetic nanoparticle
Capping
Flat film
Flats
Honeycomb-patterned film
I–V characteristic
Magnetic behavior
Magnetization
Nanostructure
Polymerization
Thin films
Volt-ampere characteristics
X-rays
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Summary:Novel biocompatible poly(ɛ-caprolactone) (PCL) was synthesized via in situ ring-opening polymerization of ɛ-caprolactone under different concentrations (10, 20, and 30 wt%) of capped magnetic nanoparticles (CMPs). The prepared PCL/CMP composites were characterized using Fourier transform infrared, UV-vis spectra, and X-ray photoelectron spectroscopy to demonstrate the interaction between PCL and CMP. X-ray diffraction patterns, scanning electron microscopy with energy dispersive X-ray spectroscopy, and thermogravimetric analysis were used to understand the structural nature and thermal stability of the polymer composites. Honeycomb-patterned thin films were fabricated by casting the composite solutions under humid conditions. The I–V characteristics and magnetic behavior of the honeycomb-patterned films were observed and compared with those of the flat thin composite films. The honeycomb-patterned PCL/CMP composite films revealed higher conductivity than the flat films and showed a hysteresis loop in the magnetization plotted against the applied magnetic field for magnetic behavior. [Display omitted] •Synthesis of poly(ɛ-caprolactone)/capped magnetic nanoparticles.•Fabrication of honeycomb-patterned thin films by casting the composite solution.•Effect of surface morphology on the I–V characteristics and magnetic behavior.•Patterned PCL/CMP films showed higher I–V characteristics and magnetic behavior.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2016.01.052